﻿#region Copyright (c) 2009, Active Web Solutions Ltd.
// Copyright (c) 2009, Active Web Solutions Ltd
// All rights reserved.

// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:

// * Redistributions of source code must retain the above copyright
//   notice, this list of conditions and the following disclaimer.

// * Redistributions in binary form must reproduce the above copyright
//   notice, this list of conditions and the following disclaimer in the
//   documentation and/or other materials provided with the distribution.

// * Neither the name of Active Web Solutions Ltd nor the names of its
//   contributors may be used to endorse or promote products derived from
//   this software without specific prior written permission.

// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#endregion

using System;
using System.Configuration;
using System.Security.Cryptography;
using System.Text;

namespace Aws.SocketShifter
{
    public class Util
    {
        public static string MachineEncrypyt(string plainText)
        {
            byte[] buffer = ProtectedData.Protect(UnicodeEncoding.UTF8.GetBytes(plainText), null, DataProtectionScope.LocalMachine);
            return Convert.ToBase64String(buffer);
        }

        public static string MachineDecrypt(string cipherText)
        {
            byte[] buffer = ProtectedData.Unprotect(Convert.FromBase64String(cipherText), null, DataProtectionScope.LocalMachine);
            return UnicodeEncoding.ASCII.GetString(buffer);
        }

        public static void SaveConfigurationSetting(string key, string value)
        {
            Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
            if (config.AppSettings.Settings[key] != null)
            {
                config.AppSettings.Settings.Remove(key);
            }
            config.AppSettings.Settings.Add(new KeyValueConfigurationElement(key, value));
            config.Save(ConfigurationSaveMode.Modified);
        }
    }
}
